product details
Zhongan S318 multi gas alarm, with full Chinese color LCD display technology, can be equipped with dozens of combustible or toxic gas sensors for detection.
The Zhong'an S318 multi gas alarm is equipped with audio and visual alarm prompts, which can adapt to concentration monitoring in complex environments. This product is suitable for various places such as chemical, pharmaceutical, municipal, water treatment, telecommunications, archaeology, laboratory, cold storage, brewing, etc.
Product features:
◆ Adopting a 2.4-inch high-definition full-color IPS industrial screen
Display various technical indicators and gas concentration values
◆ Asian ergonomic design, comfortable to the touch
The shell adopts high IP encapsulation technology
◆ Can simultaneously detect 6 channels of gas or up to 7 types of gas
◆ With data storage function, it can store 5000 pieces of data
◆ Dustproof, explosion-proof and waterproof design
◆ Intrinsic safety circuit design, anti-static and electromagnetic interference resistance
◆ Free adjustment of setting time and alarm function
6 sets of strobe indicator lights and buzzer alarms in vibration mode
Crocodile clip meets different wearing needs
◆ Complete independent matching dedicated self-priming pump
◆ Convenient U3 charging port design with strong interchangeability
◆ Reasonable design for channel parameter calibration and calibration
◆ Large capacity rechargeable lithium-ion battery


Technical Parameter
Detect gas |
Combustible/toxic and harmful gases |
detection |
Natural diffusion or (specialized card type self-priming pump) |
Detection Principle |
Electrochemistry/Catalysis/Thermal Conductivity/Infrared |
detection range |
See attached table |
display |
color liquid crystal display |
interface definition |
U3 port (USB) |
battery |
3.7V 2000mA |
Power supply mode |
Lithium ion rechargeable battery |
call the police |
Sound, light, and vibration three-level alarm |
response time |
<20s |
work environment |
Temperature: -10 ℃ -55 ℃; Humidity: Catalytic<95% RH Electrochemical (15-95)% RH |
working hours |
Flammable for about 8 hours, toxic for about 200 hours |
Instrument size |
(160*90*36)mm |
Instrument weight |
500g |
Combination detection |
support |
Explosion proof sign |
Ex ib IIB T3 Gb |
Explosion proof certificate number |
CNEx18.4828X |
protection grade |
IP65 |
product accessories
One detector
Charger head one
One charger cable
One manual
One certificate of conformity and warranty card
One factory inspection instrument report
Product images

Tested gas |
measuring range |
Optional range |
resolution |
response time |
Flammable EX |
0-100%LEL |
0-100% VOL (infrared) |
1%LEL/1%VOL |
≤ 15 seconds |
Oxygen O2 |
0-30%VOL |
0-30%、0-100%VOL |
0.1%/0.01%VOL |
≤ 15 seconds |
Hydrogen sulfide H2S |
0-100PPM |
0-50、200、1000PPM |
0.1/1PPM |
≤ 15 seconds |
Carbon monoxide CO |
0-1000PPM |
0-500/2000/5000PPM |
0.1/1PPM |
≤ 15 seconds |
Nitrogen dioxide NO2 |
0-20PPM |
0-50、1000PPM |
0.1/1PPM |
≤ 20 seconds |
natural gas |
0-100%LEL |
0-100%VOL |
1%LEL/1%VOL |
≤ 15 seconds |
Nitrogen oxides |
0-20PPM |
0-50、1000PPM |
0.1/1PPM |
≤ 20 seconds |
methane |
0-100%LEL |
0-100%VOL |
1%LEL/1%VOL |
≤ 15 seconds |
Carbon dioxide CO2 |
0-5000PPM |
0-1%, 5%, 10% VOL (infrared) |
1PPM/0.01%VOL |
≤ 20 seconds |
Nitric oxide NO |
0-250PPM |
0-500、1000PPM |
1PPM |
≤ 20 seconds |
nitrogen |
0-100%VOL |
0-100%VOL |
0.1%VOL |
≤ 15 seconds |
alcohol |
0-100%LEL |
0-100%LEL |
1%LEL/1%VOL |
≤ 15 seconds |
Sulfur dioxide SO2 |
0-20PPM |
0-50、1000PPM |
0.1/1PPM |
≤ 20 seconds |
Chlorine gas CL2 |
0-20PPM |
0-10、50、100PPM |
0.1PPM |
≤ 20 seconds |
dichlorosilane |
0-20PPM |
0-20、100PPM |
1/0.1PPM |
≤ 20 seconds |
Ammonia NH3 |
0-100PPM |
0-50、500、1000PPM |
0.1/1PPM |
≤ 20 seconds |
SILICON TETRACHLORIDE |
0-20PPM |
0-20、100PPM |
1/0.1PPM |
≤ 20 seconds |
Hydrogen H2 |
0-1000PPM |
0-40000PPM |
1/10PPM |
≤ 20 seconds |
Phosphine PH3 |
0-20PPM |
0-20、1000PPM |
0.1/1PPM |
≤ 20 seconds |
Hydrogen chloride HCL |
0-20PPM |
0-20、50、100PPM |
0.1/1PPM |
≤ 20 seconds |
acrylonitrile |
0-100PPM |
0-100PPM |
1PPM |
≤ 20 seconds |
TVOC |
0-100PPM |
0-100PPM |
1PPM |
≤ 20 seconds |
CLO2 |
0-50PPM |
0-10、100PPM |
0.1PPM |
≤ 20 seconds |
Hydrogen cyanide HCN |
0-50PPM |
0-100PPM |
0.1PPM |
≤ 20 seconds |
Ethylene oxide ETO |
0-10PPM |
0-100、1000PPM |
1PPM |
≤ 20 seconds |
Ozone O3 |
0-10PPM |
0-20、100PPM |
0.01/0.1PPM |
≤ 20 seconds |
Formaldehyde CH2O |
0-20PPM |
0-50、100PPM |
0.1/1PPM |
≤ 20 seconds |
Fluorine gas F2 |
0-10PPM |
0-1、10PPM |
1/0.1PPM |
≤ 20 seconds |
Hydrogen fluoride HF |
0-10PPM |
0-1、10、50、100PPM |
0.01/0.1PPM |
≤ 20 seconds |
Xylene, toluene |
0-20PPM |
50、100PPM |
0.1/1PPM |
≤ 20 seconds |
stench |
0-100PPM |
0-100PPM |
1PPM |
≤ 20 seconds |
For gases not listed, please contact our sales department | ||||
